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#!/usr/libexec/platform-python
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#
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# btt blkno plotting interface
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#
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# (C) Copyright 2008 Hewlett-Packard Development Company, L.P.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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bno_plot.py
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[ -h | --help ]
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[ -K | --keys-below ]
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[ -v | --verbose ]
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[ <file...> ]
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Utilizes gnuplot to generate a 3D plot of the block number output
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from btt. If no <files> are specified, it will utilize all files
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generated after btt was run with -B blknos (meaning: all files of the
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form blknos*[rw].dat).
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The -K option forces bno_plot.py to put the keys below the graph,
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typically all keys for input files are put in the upper right corner
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of the graph. If the number of devices exceed 10, then bno_plot.py will
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automatically push the keys under the graph.
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To exit the plotter, enter 'quit' or ^D at the 'gnuplot> ' prompt.
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"""
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from __future__ import absolute_import
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from __future__ import print_function
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import getopt, glob, os, sys, tempfile
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verbose = 0
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cmds = """
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set title 'btt Generated Block Accesses'
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set xlabel 'Time (secs)'
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set ylabel 'Block Number'
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set zlabel '# Blocks per IO'
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set grid
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"""
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#-----------------------------------------------------------------------------
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def parse_args(in_args):
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global verbose
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keys_below = False
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s_opts = 'hKv'
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l_opts = [ 'help', 'keys-below', 'verbose' ]
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try:
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(opts, args) = getopt.getopt(in_args, s_opts, l_opts)
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except getopt.error as msg:
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print(msg, file=sys.stderr)
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print(__doc__, file=sys.stderr)
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sys.exit(1)
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for (o, a) in opts:
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if o in ('-h', '--help'):
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print(__doc__)
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sys.exit(0)
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elif o in ('-v', '--verbose'):
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verbose += 1
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elif o in ('-K', '--keys-below'):
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keys_below = True
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if len(args) > 0: bnos = args
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else: bnos = glob.glob('blknos*[rw].dat')
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return (bnos, keys_below)
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#-----------------------------------------------------------------------------
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if __name__ == '__main__':
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(bnos, keys_below) = parse_args(sys.argv[1:])
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if verbose:
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print('Using files:', end=' ')
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for bno in bnos: print(bno, end=' ')
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if keys_below: print('\nKeys are to be placed below graph')
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else: print('')
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tmpdir = tempfile.mktemp()
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os.mkdir(tmpdir)
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plot_cmd = None
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for f in bnos:
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t = '%s/%s' % (tmpdir, f)
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fo = open(t, 'w')
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for line in open(f, 'r'):
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fld = line.split(None)
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print(fld[0], fld[1], int(fld[2])-int(fld[1]), file=fo)
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fo.close()
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t = t[t.rfind('/')+1:]
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if plot_cmd == None: plot_cmd = "splot '%s'" % t
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else: plot_cmd = "%s,'%s'" % (plot_cmd, t)
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fo = open('%s/plot.cmds' % tmpdir, 'w')
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print(cmds, file=fo)
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if len(bnos) > 10 or keys_below: print('set key below', file=fo)
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print(plot_cmd, file=fo)
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fo.close()
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pid = os.fork()
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if pid == 0:
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cmd = 'gnuplot %s/plot.cmds -' % tmpdir
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if verbose: print('Executing %s' % cmd)
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os.chdir(tmpdir)
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os.system(cmd)
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sys.exit(1)
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os.waitpid(pid, 0)
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os.system('/bin/rm -rf ' + tmpdir)
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